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Contract OI history

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Dec 18, 2026 EXPIRATION

SFM $55.00 Put

SFM261218P00055000

Latest saved OI255Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
SFM $55.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 2571280 2026-10-09: 214 OI2026-10-13: 240 OI2026-10-14: 240 OI2026-10-15: 243 OI2026-10-16: 240 OI2026-10-21: 257 OI2026-10-23: 255 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

SFM contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing255-2
Oct 21, 2026257+17
Oct 16, 2026240-3
Oct 15, 2026243+3
Oct 14, 20262400
Oct 13, 2026240+26
Oct 09, 2026214No prior observation